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So suppose I want to capture metadata about a table across all of the regions for that table.
Has anyone used a coprocessor to capture a region’s statistics and push them up to ZK where
its stored by (table, region, <metadata object>) and then a table wide value is also
stored based on a computational update?
So if I wanted to store the row counts for each region of a table, each region would update
its record in ZK on each insert / delete (can you easily remove a tombstone?) and then update
the computational value?
(Assuming you could lock those values for a short enough time to do the quick computation.
If not, then it can be computed on the fly)
Has this been done?
Thoughts?